Publications related to Cellulose acetate

Related publications (15)

Stabilization strategies in biomass depolymerization using chemical functionalization

Jeremy Luterbacher, Ydna Marie Questell-Santiago

A central feature of most lignocellulosic-biomass-valorization strategies is the depolymerization of all its three major constituents: cellulose and hemicellulose to simple sugars, and lignin to phenolic monomers. However, reactive intermediates, generally ...

2020

Cellulose phosphorylation comparison and analysis of phosphorate position on cellulose fibers

David Lyndon Emsley, Jayasubba Reddy Yarava

Chemical modifications of cellulose fibers as pretreatment for cellulose nanofibrils (CNF) production have been investigated to improve the production process and the quality of obtained cellulosic nanomaterial. In this study, phosphorylation of cellulose ...

ELSEVIER SCI LTD2020

Photocatalytic degradation of binary and ternary mixtures of antibiotics: reactive species investigation in pilot scale

Sami Rtimi

The present study investigates the photocatalytic degradation of three quinolone antibiotics (i.e., Flumequine (FLU), Oxolinic Acid (OA) and Nalidixic Acid (NA)) in mono-, binary and ternary compound systems. The closed-loop step photo-reactor and TiO2 imp ...

INST CHEMICAL ENGINEERS2019

Titanium oxide aerogel composites

László Forró, Arnaud Magrez, Endre Horvath

The invention relates to titanium oxide aerogels, in particular to titanium oxide binary or ternary (e.g. titanium oxide-carbon) aerogel monoliths possessing ordered meso- and macroporosity. The porous scaffold can be made with or without addition of binde ...

2016

Furfural production from empty fruit bunch - A biorefinery approach

Edgard Gnansounou, Jegannathan Kenthorai Raman

Biofuels production from agriculture residues is gaining much attention in Brazil due to agriculture residue availability, environmental benign properties of the fuel and, the capacity to improve rural development. However, for consideration of rational us ...

Elsevier2015

Enzyme and Acid Deconjugation of Plasma Sulfated Metanephrines

Sandrine Gerber

Background: Total (i.e. free + sulfated) metanephrines in plasma is a biomarker for the diagnosis of pheochromocytoma/paraganglioma. Sulfated metanephrines must be completely deconjugated by perchloric acid hydrolysis or sulfatase treatment prior to analyt ...

Elsevier2014

Enhanced Conversion of Carbohydrates to the Platform Chemical 5-Hydroxymethylfurfural Using Designer Ionic Liquids

Paul Joseph Dyson, Rosario Scopelliti, Gabor Laurenczy, Zhaofu Fei, Ning Yan, Sviatlana Siankevich

5-Hydroxymethylfurfural (HMF) is a key platform chemical that may be obtained from various cellulosic (biomass) derivatives. Previously, it has been shown that ionic liquids (ILs) facilitate the catalytic conversion of glucose into HMF. Herein, we demonstr ...

Wiley-V C H Verlag Gmbh2014

RF-plasma pretreatment of surfaces leading to TiO2 coatings with improved optical absorption and OH-radical production

César Pulgarin, Juan Kiwi, Sami Rtimi, Christophe Roussel

Evidence is presented for the RF pretreatment of polyester enhances the TiO2 coating generation of oxidative species/radicals under a low level actinic light irradiation. After 30 min RF-plasma pretreatment of the polyester samples, the fastest bacterial i ...

Elsevier2013

Photocatalytic evaluation of TiO2/nylon systems prepared at different impregnation times

César Pulgarin, Juan Kiwi

TiO2/nylon fabrics were investigated for methanol degradation under UV light irradiation. TiO2 Degussa P-25 was supported on nylon by immersing the nylon in sol-gel TiO2 and silicone. The TiO2 layers on the nylon were explored as a function of the time of ...

Elsevier2011

Preparation, testing and performance of a TiO2/polyester photocatalyst for the degradation of gaseous methanol

César Pulgarin, Juan Kiwi

TiO2 modified polyester photocatalysts were prepared by immersion. drying and curing of the polyester in TiO2 containing suspensions under different experimental conditions. The structure of TiO2 layers on the polyester varied according to the time of imme ...

2010

Self-cleaning modified TiO2-cotton pretreated by UVC-light (185 nm) and RF-plasma in vacuum and also under atmospheric pressure

César Pulgarin, Juan Kiwi

Two new innovative findings presented in this study are: (a) TiO2-cotton fabrics obtained by pretreatment with UVC-light (185nm) at atmospheric pressure introduced functionalities into the cotton surface enabling the chelation/binding of TiO2. This was pos ...

2009

Parameter and process significance in mechanistic modeling of cellulose hydrolysis

David Andrew Barry

A process-based model relevant to landfill and anaerobic digesters was developed, which included a novel approach to biomass transfer between a cellulose-bound biofilm and biomass in the bulk liquid. Model results highlighted the significance of the bacter ...

Elsevier2008

Photocatalytic Discoloration of Organic Compounds on Outdoor Building Cement Panels Modified by Photoactive Coatings

César Pulgarin, Victor Sarria

Cement based Eternit plates modified by TiO2/SiO2 surface layers acquired self-cleaning properties. The TiO2/SiO2 coating was transparent indicating that the small TiO2 (rutile) crystals cause no significant scattering. The parameters related to the compos ...

2007

Surfactant-mediated interaction of fragrances with cellulose model surfaces

Mahtab Varnous

Odor perception may be considered from different perspectives: the physicochemical properties of odorants and target surfaces of interest, the biological aspects of electing odorant molecules by odorant receptors and their related downstream cellular signa ...

EPFL2006

Cellulose model surface

Horst Arthur Vogel, Mahtab Varnous

The invention relates to an isotropic cellulose film deposited on an inorg. support layer. The invention also relates to a process for manufg. such cellulose films as well as an anal. cell comprising such deposited films. The cellulose film is particularly ...

(Firmenich S. A., Switz.).2005